Seriously, it has the features of Earth plants. It is an alien, we know that, but who is it an alien to? It doesn't make sense that it'd be from space. It is also the only character that sounds like a little girl. It is never said where it the sunflower is from or even really talked about much other than the fact that it's a character. What is it REALLY? The Alien Sunflower is the same colour as the tricycle that is in Dave's yard. Now let's talk about that Alien Sunflower. He could find a way to get his daughter without causing paradoxes. To go back in time and get Penny back? And what does Crazy Dave keep in his backyard? A pink tricycle made for toddlers! Don't forget he is a crazy super-genious. Maybe that's why he named his time machine 'Penny'. He may believe he can get his daughter back.

In the night level, sometimes graves pop up that say 'Just Resting'. 'Bloom and Doom Co.' I think Crazy Dave wants destruction to all zombies for what happened to his daughter. On the plant cards, when you choose them, you can see what they are developed for. Why would they want him to LEAVE if they wanted food? They know there is an weaker target in the house. In that message, they say come to my house and keep your door unlocked. At one point in the game PvZ, the zombies send a message that is from Crazy Dave's 'Muthur(Not the Zombies!)'. Toddlers and babies have soft spots on their heads.

That is the shortest amount for a zombie to finish his meal. It's the normal to say when something tragic happens. If he was just bitten he'd be physically inable to speak or move. That's not what you say when you are in pain. When you fail you hear him yell the word 'NOOOO!' right AFTER you hear crunching. I think that the zombies ate Crazy Dave's daughter after the player failed to protect the house.

I think I figured out why Crazy Dave is crazy if he is(we'll talk about whether or not he is later).

Plants vs zombies crazy dave zombie